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Old 02-23-2009, 06:25 PM   #1
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hey got a 98 zl 500 that refuses to idle at less than 3500 rpm.....it does not respond to turning the idle screws out at all it will drop for a few minutes then spike up again.....at times almost to the point of engagement.........i noticed alot of cracks in my carb boots and air box boots so i thought this was the cause and replaced them with no luck......my carbeurater slides are dropping all the way down as well.......has anybody had this problem before or know what might cause this any help would be appreciated.



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Old 02-23-2009, 08:09 PM   #2
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Spray some carb cleaner around the bottom of your jugs and behind the primary clutch. If you get a spike in your idle you might have crank seal problems. Make sure you don't spray it around the carb intakes.
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Old 02-23-2009, 11:30 PM   #3
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yup yup i agree with omercityman.....also if you flip on the choke, do the rpms drop to normal.....i bet they do....
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Old 02-24-2009, 06:11 PM   #4
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its not a crank seal problem but thanks for the input....i just replaced crank seals before the season started, the old seals were toast though.......... and yes when i put the choke on my idle drops to normal.... ill look into maybe my throttle cable has no slack and the slides are sitting higher in the carb body?
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Old 02-24-2009, 07:03 PM   #5
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<div class='quotetop'>QUOTE (440catguy @ Feb 24 2009, 06:11 PM) <{POST_SNAPBACK}></div>
 Quote:
its not a crank seal problem but thanks for the input....i just replaced crank seals before the season started, the old seals were toast though.......... and yes when i put the choke on my idle drops to normal.... ill look into maybe my throttle cable has no slack and the slides are sitting higher in the carb body?[/b]
sounds more like you've got a lean condition going on down there at idle....but check for throttle cable free play..................O yah and just because the selas were replaces...doenst mean they are not leaking lol crap happens!! Id do a leak down test on it....and strip the carbs and clean em out!
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